Installation issue under linux

[cedricboudinet]

Hello,
stlink installation under Linux (Debian 9) is broken since modifications for #695: libstlink.so (and others) installs in /usr/local/lib/lib instead of /usr/local/lib
It seems that the error comes from these instructions:
if(IS_DIRECTORY CMAKE_LIBRARY_PATH)
else()
set(CMAKE_LIBRARY_PATH "lib")
endif()
If I change it to
if(IS_DIRECTORY CMAKE_LIBRARY_PATH)
else()
set(CMAKE_LIBRARY_PATH "")
endif()
then it works again.
I can create a PR if you want, but I cannot test the modification under other OS.

[Vascom]

I can confirm.
Also hardcode path to "lib" breake x86_64 with /usr/lib64 folder.

[xor-gate]

Hi guys, I agree with your both. We must find a working solution for all cases (with less cmake code).

[Vascom]

May be if defined LIB_INSTALL_DIR then blank CMAKE_LIBRARY_PATH?
Or blank it for linux always.

[slyshykO]

In my defence, I will say that I encounter a situation when CMAKE_LIBRARY_PATH is a list of paths. That broke all install command completely.
In my opinion, we should remove CMAKE_LIBRARY_PATH from all install commands.

[Cheng-SG]

I encountered the same issue

[Vascom]

@Cheng-SG please try #701 fix